Isakhiwo sempahla eyodwa esingasebenziseka kabusha sesisebenza ngokugcwele emakethe yokupakisha yasekhaya. Kodwa-ke, izinhlelo zokusebenza eziningi zisagxile kwezinye izinkambu zesithiyo eziphansi neziphakathi. Indlela yokuqalisa kabusha isakhiwo sezinto ezisetshenziswayo esisodwa endaweni ephakeme yokuvimbela noma ngisho nenkambu yokuvimbela ephezulu yokupheka kokushisa okuphezulu? Njengamanje, amanye amabhizinisi ajwayele ukukhiqiza into eyodwa, noma ehlangabezana ngokugcwele nezidingo zokugaywa kabusha? Okokuqala, siyini isakhiwo sempahla eyodwa esingagaywa kabusha? Nakuba ukwakheka kwempahla eyodwa okungagaywa kabusha kudume kakhulu emakethe yasekhaya, kodwa amanye amabhizinisi akhiqiza ukwakheka kwempahla eyodwa esitifiketini esigaywa kabusha, ngeke abe nephesenti eliphezulu lesilinganiso sokubuyisela. Umfanekiso 1 ubonisa idatha yokuhlola yezinga lokuthola kabusha lokupakishwa okuyinhlanganisela elihlinzekwe yi-“Institute Cyclos-HTP Institute of Germany”, okuyinkampani ezimele yokuhlola nezitifiketi zochwepheshe. Njengamanje, isikhiphe amashumi ezinkulungwane zezitifiketi zokugaywa kabusha emhlabeni jikelele. E-China, inqwaba yamabhizinisi afana ne-Huizhou Baoba ne-Daoco nawo athole izitifiketi ezikhishwe yilesi sikhungo. Lokhu kutholwa kuyimiphumela yokuhlolwa yemikhiqizo yokupakisha eyinhlanganisela isakhiwo sayo sisonke sihambisana nesakhiwo sento eyodwa. Kungani kunomehluko omkhulu kangaka?
Ngokusho kwemihlahlandlela yaseYurophu ye-CEFLEX kanye nedatha ye-Institute Cyclos-HTP eJalimane, amanani okubuyiselwa kwezinto zokuhlanzeka okuphezulu ami kanje: ifilimu eyodwa ye-polypropylene (PP), ifilimu eyodwa ye-polyethylene (PE) nefilimu eyodwa ye-polyester (PET) enezinga eliphezulu lokutakula: Ifilimu yesakhiwo esiyinhlanganisela ye-polyolefin yokutakula okuphezulu: ekwazi ukuphinda isetshenziswe futhi ku-polypropylene film (PP), ifilimu eyodwa ye-polyethylene (PE) nefilimu eyodwa ye-polyester (PET) enezinga eliphezulu lokutakula: Ifilimu yesakhiwo esiyinhlanganisela ye-polyolefin yokutakula okuphezulu: ekwazi ukuphinda isetshenziswe futhi ku-polypropylene film (PP), ifilimu eyodwa ye-polyethylene (PE) nefilimu ye-polyester eyodwa (i-PET) enezinga eliphezulu lokubuyisela kabusha izinto ezingezona ezinkulu (ezifana noyinki, iglue, i-aluminium plating, i-EVOH, njll.) isamba esingekho ngaphezu kuka-5%. Kuvunyelwe ukuqukatha izithako, ingqikithi yakhona, hhayi okuqukethwe okuhlukene, okuyisakhiwo esiningi somkhiqizo womklamo webhizinisi othambekele ekubeni namaphutha, okuholela esilinganisweni esiphansi sokutakula lapho unikezwa isitifiketi.
Inqubo yokuhwamuka kwevacuum ingathuthukisa umsebenzi wokuvinjwa kabili kwamanzi nokumelana komoyampilo, okuphinde kube indlela yokuthuthukisa ukusebenza kwesithiyo esiphezulu njengamanje, kanye nenqubo enezindleko eziphezulu zokusebenza komsebenzi wokumelana namanzi nomoya-mpilo. I-vacuum evaporation ingenye yezinqubo ezinengxenye encane yezinto ezingezona eziyinhloko kuzo zonke izinqubo zokuvimbela ukuphakamisa. Ugqinsi longqimba lwe-aluminium plating luyi-0.02~0.03u kuphela, enengxenye encane kakhulu futhi ayithinti isimiso sokusebenziseka kabusha nokusebenziseka kabusha. Ngokwesisekelo sokuphinda kusetshenziswe kabusha, inqubo yokumboza esetshenziswa kakhulu i-PVA coating, engathuthukisa umsebenzi wokumelana komoyampilo. Ubukhulu benqubo yokumboza bucishe bube ngu-1 ~ 3u, bubalwa ngenani elincane uma kuqhathaniswa. Ngokuphathelene nomsebenzi wokumelana ne-oxygen, kuyinqubo engabizi kakhulu, ehambisana nesimiso sokuphinda kusetshenziswe futhi kusetshenziswe kabusha. Kodwa i-PVA inobuthakathaka obubili obusobala: okokuqala, ayenzi lutho ukumisa amanzi; Okwesibili, kulula ukulahlekelwa umsebenzi wokumelana ne-oxygen ngemva kokumunca amanzi. Ngokwesisekelo sokusebenziseka kabusha, inqubo esetshenziswa kakhulu yokuhlanganisa i-EVOH co-extrusion okwamanje, kuyilapho i-PA co-extrusion esetshenziswa kabanzi ayihambisani nomgomo ogaywa kabusha. Ngaphansi komgomo osebenziseka kabusha, i-PA ayivunyelwe, futhi ingxenye enkulu ye-EVOH ayikho ngaphezu kuka-5%. Ugqinsi lwe-EVOH co-extrusion cishe luyi-4 ~ 9u, ngokusho kobukhulu bento eyinhloko ihlukile, inqubo ye-EVOH co-extrusion kulula ukudlula u-5% wesilinganiso, ikakhulukazi kubukhulu obuphelele besakhiwo esincanyana, futhi umgoqo wayo nawo unobudlelwane obuqondile nobukhulu. Ngaphansi komgomo wokuphinda usebenziseke kabusha, i-EVOH ikhawulelwe ngengxenye yokwengezwa futhi inokuthuthukiswa okulinganiselwe kumgoqo. Njengokwemboza kwe-PVA, i-EVOH ithuthukisa ukumelana komoyampilo kuphela futhi ayisizi ukumelana namanzi. Ngokusekelwe kubuchwepheshe bamanje obuvuthiwe obujwayelekile, amafilimu e-BOPP nawe-PET angafinyelela ukumelana okungcono kakhulu kwamanzi nomoya-mpilo. Ifilimu ye-Bolene isithiyo esiphezulu se-BOPP eyenziwe nge-aluminium, isithiyo esiphindwe kabili esingaphansi kwe-0.1; Njengamanje, kunobuchwepheshe obuvuthiwe bokusebenzisa izinqubo zokuvimbela ezintathu noma ezimbili kumafilimu amancanyana ngesikhathi esisodwa, anezinzuzo ezihambisanayo, ukuze kuzuzwe ukusebenza okungcono kwesithiyo. Ngokusekelwe kubuchwepheshe bamanje obuvuthiwe, ithebula elilandelayo libala izici zesithiyo eziphezulu zezakhiwo ezikwazi ukuphinda zigaywe kabusha, kanye nezinga elihambisanayo lokuthola kabusha elingenzeka lesakhiwo ngasinye kanye nesimo sohlelo esinezinzuzo eziningi.
Isikhathi sokuthumela: Mar-23-2023